Aircraft



FIG. 1 is a side elevational view of an aircraft, showing my new design.

FIG. 2 is a top plan view.

FIG. 3 is a front elevational view.

FIG. 4 is a bottom plan view; and

FIG. 5 is a rear elevational view.

FIG. 6 is an enlarged perspective view thereof. 

The ornamental design for an aircraft, as shown. 